test_shelve.py 文件源码

def test_writeback_also_writes_immediately(self):
        # Issue 5754
        d = {}
        s = shelve.Shelf(d, writeback=True)
        s['key'] = [1]
        p1 = d['key']  # Will give a KeyError if backing store not updated
        s['key'].append(2)
        s.close()
        p2 = d['key']
        self.assertNotEqual(p1, p2)  # Write creates new object in store